Two‐dimensional NMR spectra of hydrolysable tannins which form equilibrium mixtures

Takashi Yoshida; Tsutomu Hatano; Takuo Okuda

doi:10.1002/mrc.1260301311

Two‐dimensional NMR spectra of hydrolysable tannins which form equilibrium mixtures

Takashi Yoshida, Tsutomu Hatano, Takuo Okuda

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The structures of hydrolysable tannins, each existing as an equilibrium mixture due to tautomerization at the sugar core(s) or at the dehydrohexahydroxydiphenoyl group (five‐ and six‐membered hemiacetal forms) in the molecule, were elucidated by NMR, employing 2D NMR techniques (COSY, NOESY, ¹H¹³C long‐range COSY, etc.), on derivatives which avoid the spectral complication due to equilibration.

Original language	English
Pages (from-to)	S46-S55
Journal	Magnetic Resonance in Chemistry
Volume	30
Issue number	13
DOIs	https://doi.org/10.1002/mrc.1260301311
Publication status	Published - 1992

Keywords

Anomer
Camelliatannin H
Coriariin H
COSY
Euphorbin C
Heteronuclear long‐range
Hydrolysable tannin
Oenothein B
Oligomeric hydrolysable tannin
Tannin

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)

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abstract = "The structures of hydrolysable tannins, each existing as an equilibrium mixture due to tautomerization at the sugar core(s) or at the dehydrohexahydroxydiphenoyl group (five‐ and six‐membered hemiacetal forms) in the molecule, were elucidated by NMR, employing 2D NMR techniques (COSY, NOESY, 1H13C long‐range COSY, etc.), on derivatives which avoid the spectral complication due to equilibration.",

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year = "1992",

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T1 - Two‐dimensional NMR spectra of hydrolysable tannins which form equilibrium mixtures

AU - Yoshida, Takashi

AU - Hatano, Tsutomu

AU - Okuda, Takuo

PY - 1992

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N2 - The structures of hydrolysable tannins, each existing as an equilibrium mixture due to tautomerization at the sugar core(s) or at the dehydrohexahydroxydiphenoyl group (five‐ and six‐membered hemiacetal forms) in the molecule, were elucidated by NMR, employing 2D NMR techniques (COSY, NOESY, 1H13C long‐range COSY, etc.), on derivatives which avoid the spectral complication due to equilibration.

AB - The structures of hydrolysable tannins, each existing as an equilibrium mixture due to tautomerization at the sugar core(s) or at the dehydrohexahydroxydiphenoyl group (five‐ and six‐membered hemiacetal forms) in the molecule, were elucidated by NMR, employing 2D NMR techniques (COSY, NOESY, 1H13C long‐range COSY, etc.), on derivatives which avoid the spectral complication due to equilibration.

KW - Anomer

KW - Camelliatannin H

KW - Coriariin H

KW - COSY

KW - Euphorbin C

KW - Heteronuclear long‐range

KW - Hydrolysable tannin

KW - Oenothein B

KW - Oligomeric hydrolysable tannin

KW - Tannin

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Two‐dimensional NMR spectra of hydrolysable tannins which form equilibrium mixtures

Abstract

Keywords

ASJC Scopus subject areas

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